While Mariah Carey wasn't present to perform at 'Dick Clark's Rockin' New Year's Eve,' she still was a trending topic that day. Carey's twitter account was hacked around 3:30 PM PT on New Year's Ever. According to Variety, the hacker tweeted over 50 tweets. Many suspect that it was the same hacking group behind the hacking of Twitter CEO Jack Dorsey, the Chuckling Group. Dorsey account was hacked through a method called SIM-swapping which allows hackers access to personal phone numbers.